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High Power Nanocomposite TiS2 Cathodes for All-Solid-State Lithium Batteries.

Authors :
Trevey, James E.
Stoldt, Conrad R.
Lee, Se-Hee
Source :
Journal of The Electrochemical Society; 2011, Vol. 158 Issue 12, pA1282-A1289, 8p
Publication Year :
2011

Abstract

To deploy solid-state Li batteries in next-generation vehicles, it is essential to develop electrodes with durability, high energy and high power. Here we report on nanostructured composite cathode materials that enable solid-state Li batteries to cycle with durable high energy and high rate performance. Particle size of TiS<subscript>2</subscript> is reduced by planetary ball-milling to enhance performance of nanocomposite cathodes in solid-state Li batteries. The better utilization of active material and fast kinetics resulting from the size reduction of TiS<subscript>2</subscript> allow for highly reversible capacity in both room temperature and elevated temperature batteries. High power all-solid-state batteries have been constructed with nano-sized TiS<subscript>2</subscript> and demonstrated high power density over 1000 W kg<superscript>-1</superscript> for over 50 cycles, with a maximum power density of ~ 1400 W kg<superscript>-1</superscript>. Galvanostatic intermittent titration technique and electrochemical impedance spectroscopy are employed in order to explain the extremely high rate capability of nanostructured TiS<subscript>2</subscript> nanocomposite. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00134651
Volume :
158
Issue :
12
Database :
Supplemental Index
Journal :
Journal of The Electrochemical Society
Publication Type :
Academic Journal
Accession number :
69727215
Full Text :
https://doi.org/10.1149/2.017112jes